Missoula Montana Shed and Accessory Structure Permit Guide

Missoula shed permits depend on floor area and height, with small sheds exempt from permit requirements but still subject to setback and zoning rules.

Permit takeaway

Missoula says no permit is required for a shed less than 120 square feet in floor area or less than 12 feet high, while a zoning compliance permit is required over 120 square feet or 12 feet high and a building permit is required over 200 square feet or 12 feet high.

Zoning and placement

Sheds are accessory structures, must be subordinate to the principal use, and are still subject to setbacks even when no permit is required.

Building and trade review

The zoning officer has authority to determine whether a use or structure qualifies as accessory, and a primary structure must exist on the parcel.

Call before applying when

Call before applying if the shed is near 120 square feet, near 12 feet high, over 200 square feet, close to setbacks, or on a parcel without a clear primary structure.

Documents to prepare

• Shed size
• Shed height
• Site plan
• Setback information
• Zoning compliance permit when required

Inspection planning

• Confirm size and height
• Check setbacks
• Apply for zoning compliance or building permit when required
• Respond to zoning review
• Keep approval records

Official sources

• Missoula Sheds and Accessory Structures
• Missoula County Building Permits and Inspections
• Missoula County Permit System

This guide is a planning summary. Always verify the current requirements with the local office before starting work.